Plug connection



July 20 1926 1,593,084.

A. H. KLINE PLUG CONNECTION Filed Feb. 12. 1925 I ATTORNEYS I Patented July 20, 1926.

UNITED STATES ARTHUR'HENRY KLINE, OF CHICAGO.

ILLINOIS.

PLUG CONNECTION.

Application filed February 12, 1923. Serial No. 618,644.

My invention relates to improvements in plug connections and it consists in the combinations, constructions, and' arrangements herein described and claimed.

An object of my invention is to provide an improvement vice shown in my co-pending application Serial No. 412,503. In said application, I disclosed a plug in which the threaded portion is composed of two separable halves which are normally held away from each other by means of a spring. These halves are adapted to abut one another when the plug is inserted into a socket, whereby the plug is yieldingly held in the socket. In the present invention, the entire plug is composed of two halves instead of merely the threaded portion being .composed of two halves, which is the casein the co-pending application. This construction permits the two parts of the plug to be cast in such a manner that the openings which are needed in the plug are provided when theparts are cast.

A further object of my invention is to provide a device of the type described in which one of the terminals also acts as a retaining'means. for the plug, whereby the plug is yieldingly held in the socket.

A further object of my invention is to provide a device of the type described in which all of the metal parts of the plug are carried by one of themembers, thereby obviatingthe necessity of using both halves, in as sembling the metal parts to the plug.

A further object of my invention is to provide a device of the type described in which the halves are constructed so that they may be cast in such a manner that the openings in the halves may be formed at the casting. thereby obviating the subsequent drilling of the openings after the castings are made.

A further object of my invention is to provide a device of the type described which is extremely of a minimum number of parts, and which can be made in the minimum number of operations Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended--claims.

My, invention is illustrated in the accompanying drawings forming part of this application, in which- Figure 1 is a side elevation of the device,

over that form of the de- Figures 1, 3, and 4,

simple in construction, consists Figure 5 is a section along the line 5-5 of Figure 3, and

igure 6 is a section along the line 6-6 of Figure 3.

In carrying out my invention 1 provide a plug which is made of an insulatin material, such-as rubber, or any other li e composition. The device A and B which are of the shape shown in and which are adapted to be secured to each other by means of a screw 5. The member B is constructed so as to carry all of the metal parts of the plug while the member A is constructed to merely act as a cover for the member B. The two members when assembled resemble an ordinary plug, except that the exterior surfaces of the portions 2 and 3 of the members A and B are not threaded as is ordinarily the custom. The portions 2 and 3 of the plug are adapted to be received within the socket indicated generally at 4 in Figure 2. The member A is provided with an opening 6 through which the screw 5 is disposed, the screw being received in a threaded bore? in the member B. It will be noted from Figure 4 that the member A is provided with a recess 8 of the shape shown in Figure 4 and is also provided with a recess 9. The recess 8 receix'es the wires 10 of the plug, while the recess 9 receives a resilient terminal 11.

The member B carries terminals 11 and 12, (see Figure 3). The terminal 11'is rigidly secured to the member 18 by means of a rivet 13. The terminal is disposed in a portionof the recess 14. The terminal 12 is disposed in the recess 14 and is secured in place by means of a rivet 15. It will be noted from Figure 2 that the ter minal 12 extends through a slot 16 and is then bent upwardly along the side of the portion 3. The portion 3 is provided with a recess 17 which receives the upwardly bent portion 18 of the terminal 12. The portion 18 has spring qualities, and is adapted to be entirely received within the recess 17. I

The terminal 12 also provides novel means by which the plug is held in place in the consists of two halves lltl till

socket l. The portion 18 has a cup-shaped part 19 which receives the end of a spring 20. The other end of the spring 20 is inserted in a recess 21 in the member B. It will be noted from this construction that the spring 20 yieldingly holds the portion18 of the terminal 12 in frictional engagement with the socket l. vides a raised portion on the exterior surface of the portion 18, this raised portion being received in the threads of the socket i. In this manner the portion l8 acts as a thread for holding the plug in the sockets.

The other terminal 11 is curved around projection 21 of the member B. The recess 9 islarge enough to receive the terminal 11 and the projection 21. The projection 21 prevents lateral movement of the members A and B. The screw 1 andthe projection 21 securely hold the members A and B together as a. single unit.

The terminalsll and 12 carry screws 22 and 23 to which the ends secured. lit will be noted that this plug is especially designed so that the connection of the wires may be made to one of the members, i. e., the member B; It will also be noted that all of the metal parts are assembled to the member l5 and notto the memher A. This results in a great saving of time in the manufacture of the device, since it is only necessary to pass the member B through the various operations by means of which the terminals 11 and 12 are assembled to the member. The screws 22 and 23 are received in threaded sleeves 241 and 25 respectively, these sleeves being cast into ,recesses 26 2? of the member B. 0

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The electrician in wiring the plug, merely removes the screw 5, whereupon the two mernhere are separated, thus the wires 10 to be secured to the screws 222 and The two parts A and B are now secured to each other by means of a screw 5 and the device is ready for ordinary use. As heretofore stated, the wiring of the plug is greatly simpliiied, since the screws 22 and 23 are fully exposed and are both on the member The lug may now be inserted into any slot desired, without the necessity of rotat ing tie plug as is usually the case. The spring portion 18 or? terminal 12 will per nrit the plug to be received within the socket and at the same time will yieldingly hold The. cup shaped portion 19 proof the wires 10 are vnal pro ge sisting o reeaosa the plug in place after it is once received. The free end of the terminal 11 is bent parallel with the top of from the top.

the terminal (not shown) hen it is desired 18 merely necessary on the plug,

move inwardly into permit the plug to device is extremel The socket .r.

lhis terminal whereby th the plug,

to remove and is spaced engages with of the socket 4c. the plug, it

to pull downwardly upe portion 1 the groove 17, an

lie-released from the y simple 8 will (1 will in construction, and consists of a minimum number 0 1 parts. The two members A and B are'constructed iii-such a manner that the openings -n hers otter the members arecast,

ly holds the portion 18 in con socket.

lt will also be noted that terminal ll, which portion ii,

for receivi The sprr g the members will be made when the members are cast, thereby obviating the necessity of drilling openings in the memlt will be noted that the two members A 28 which provide a comthe mg the knot 29 of the 20 not only assists in socket, also firmtact with the resilient spaced from the body l claim: 1. A pl mg a smoo .f oompr said body i a second to tends to maintain a close connection with the central terminal but,

sing a portion havouter cylindrical wall, from the top of said he ing a groove in its we rial carried by said body and a termibeing adapted to be received said groove, yieldingly holding said and. a spring for terminal out of the groove,

named terminal having a cup-she tion for spring, s a progectio which is in an else 2. plug comp for holdinr or the be tongue also "cting a cop-shop risi :he halves ried by said astop fors ll ldilll lRY second pod poreceiving the outer end the providing on the outer side of the terminal 5. ipted. to engage with the three s c light oclret,

ng a body portion conte halves, said halves h ing faces adapted to abut each other, ,ether in abutting es having tongs otaer hall .aving a groove ad the tongue, whereby a PBS in the plane of their e faces with respect to eaclrother is preven and a terminal car 

